Tensile Test Methods for Plastics: ASTM D638 - Specs

Type I

ASTM D638 Specimen Dimensions

Full length,l³	165
Parallel length,l²	57
Gauge length,l¹	50
Parallel section width,strong¹	13
Thickness,h	7 mm or less （ Recommend 3.2±0.4 mm ）
Grip section width,strong²	19
Distance between grips	115

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Type II

ASTM D638 Specimen Dimensions

Full length,l³	185
Parallel length,l²	57
Gauge length,l¹	50
Parallel section width,strong¹	6
Thickness,h	7 mm or less （ Recommend 3.2±0.4 mm ）
Grip section width,strong²	19
Distance between grips	135

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Type III

ASTM D638 Specimen Dimensions

Full length,l³	165
Parallel length,l²	57
Gauge length,l¹	50
Parallel section width,strong¹	19
Thickness,h	7mm to 14mm
Grip section width,strong²	29
Distance between grips	115

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Type V

ASTM D638 Specimen Dimensions

Parallel length,l²	63.5
Parallel section width,strong¹	7.62
Thickness,h	4mm or less
Grip section width,strong²	9.53
Distance between grips	25.4

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Five types of specimens
Type I is recommended
Type II is used if break does not occur within the parallel section of Type I
Type V is used for special circumstances, such as testing in a thermostatic chamber
(In addition, other shapes are specified, such as tube and rod shapes.)

Type IV

ASTM D638 Specimen Dimensions

Full length,l³	115
Parallel length,l²	33
Gauge length,l¹	25
Parallel section width,strong¹	6
Thickness,h	4mm or less
Grip section width,strong²	19
Distance between grips	65

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